Sewer gas-trap



A. F. PPLUGHAUPT, Jr.

Sewer-Gas Trap.

No. 228,674. Patented June 8, i880.

WITNES SE ATTORNEYS.-

rLPErERs, FHOTO'UTHOGRAPHER, WASBIHGTCN, D C.

UNITED STATES PATENT OFFICE...

ALBERT F. PFLUGHAUPT, JR, OF BROOKLYN, NEW YORK.

SEWER GAS-TRAP.

SPECIFICATION forming part of Letters Patent No. 228,674, dated June 8, 1880.

Application filed October 28, 1879.

To all whom it may concern:

Be it known that I, ALBERT FREDERICK PFLUGHAUPT, Jr., of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvementin Devices for Preventing Sewer Gas from Entering Houses, of which the following is a specification.

Figure l is a plan view of the improvement. Fig. 2 is a sectional elevation taken through the line at 00 m 00, Fig. 1. Fig. 3 is a sectional elevation taken through the line 3 3 Fig. 1. Figs. 4 and 5 are plan views of the connected plugs of the two three-way cocks. Figs. 6 and 7 are sectional elevations of the two three-way cocks.

Similar letters of reference indicate corresponding parts.

The object of this invention is to furnish devices for connecting the waste-pipes of houses with sewers, which shall be so constructed as to prevent sewer-gas from passing from sewers into houses through the waste-pipes.

A represents an iron tank, of a capacity depending upon the amount of sewage to be discharged from the house.

B is the waste-pipe from the house, which waste pipe enters the tank A and extends nearly to the bottom of the said tank A.

In the lower end of the waste-pipe B is formed a trap, O, to prevent gas from the tank A from entering the house through the waste-pipe B.

D is a pipe passing through the bottom of the tank A, and which is designed to open into the sewer. The upper end of the pipe D enters a compartment, E, formed by the upward extension of a part of the tank A, and which is separated from the main compartment of the said tank A by a perforated partition, F. The upper end of the pipe D rises a little above the perforated partition F, and is closed by a valve, G, which is provided with a float, H. With this construction, when the liquid contents of the tank A rise into the compartment E the float H rises and opens the valve G, allowing the said liquid contents to flow through the pipe D into the sewer, the valve G closing as the float His lowered by the descent of the liquid in the compartment E.

With the compartment E is connected apipe, I, which is designed to be extended through the roof of the house to carry off any gas that may arise from the tank A.

WVith the bottom of the tank A is connected a pipe, J, leading into the sewer. The upper end of the pipe J is closed with a valve orstopper, K, to which is attached the lower end of astem orrod, L. The stem L passes up through the top of the compartment E, enters the lower end of a cylinder, M, attached to the said top, and has a piston, N, attached to its upper end, which piston N is fitted into and works in the said cylinder M.

With the upper and lower parts of the cylinder M are connected the ends of two pipes, O P, the other ends of which are connected with the water-pipe Q.

In the pipes O P are placed two three-Way cocks, B S, the plugs of which are connected by a rod or bar, T, provided with a handle, U, for convenience in operating it, so that the said plugs may be moved together.

The cocks B S are provided with dischargenozzles V W, and their plugs are so arranged that when one is adjusted to allow water from the pipe Q to flow into one end of the cylinder M the other will be adjusted to allow the water from the other end of the cylinder M to flow out of its nozzle, so that water will always be discharged from one end of the cylinder M as it is admitted into the other end, and the piston N will be worked up and down to open and close the valve K by water-pressure. The waste-water from the nozzles V W is conducted into the waste-pipe in the usual way.

With this construction the contents of the waste-pipe B.will be discharged through the trap G into the lower part of the tank A beneath the body of water that may be in the said tank, the solid matter remaining in the lower part of the tank A, and the liquid matter, as the tank A fills, being discharged automatically through the valve G H and pipe D into the sewer.

Once a day, or as often as required, the three-way cocks R S are adjusted to admit the water into the lower end of the cylinder M, to raise the piston N, open the valve K, and discharge the solid contents of the tank A into the sewer.

If desired, the three-way cock B may be connected with a cock in the water-pipe, and the piston N provided with a balancing-weight, so

that the valve K will be opened and the solid contents of the tank A discharged every time 5 the said cock in the water-pipe is opened to draw water.

With this construction the gas from the sewer will be shut off from the waste-pipe, and will thus be prevented from passing through the waste-pipe into the house.

Having thus described in yin vention, I claim as new and desire to secure by Letters Patent 1. The combination, with a waste -pipe, B, I 5 having trap O, of the apartments A E, sepa-H "by water-pressure, as set forth.

ALBERT F. PFLUGHAUPT, JR. Witnesses:

J AMES T. GRAHAM,

G. SEDGWIGK. 

